气液两相流管道泄漏瞬态模型及数值计算  

Transient model and numerical calculation of gas-liquid two-phase flow pipeline leakage

作　　者：蔡永桥 卢进 王庆 孙晓阳[3] 曹学文[3] CAI Yongqiao;LUJin;WANG Qing;SUN Xiaoyang;CAO Xuewen(CNOOC Energy Development Equipment Technology Co., Ltd., Tianjin 300459, China;CNOOC Shandong Chemical Engineering Co.,Ltd.,Jinan 250014,China;College of Pipeline and Civil Engineering,China University of Petroleum( Huadong ),Qingdao 266580,China)

机构地区：[1]中海油能源发展装备技术有限公司,天津300459 [2]中海油山东化学工程有限责任公司,山东济南250014 [3]中国石油大学(华东)储运与建筑工程学院,山东青岛266580

出　　处：《石油工程建设》2017年第6期27-33,共7页Petroleum Engineering Construction

摘　　要：气液两相流管道一旦有泄漏发生,管道压力、截面含液率及流速等参数均会发生改变,分析泄漏过程中气液两相流的瞬态变化对于探究管道泄漏特征、实施两相流管道泄漏检测与定位具有重要意义。对气液两相流泄漏过程进行瞬态分析,在双流体模型的基础上建立气液两相流泄漏系统数学模型,利用隐式差分法求解控制方程,并用C++编程计算气液两相流泄漏数值解,分析分层流条件下泄漏对管道压力、截面含液率、气液相流速等参数的影响,将数值计算结果与气液两相流泄漏实验数据进行对比。结果表明:管道泄漏后,泄漏点下游管道压力、截面含液率、气液相流速等参数值均下降,且数值计算结果与实验数据趋势一致,证明所建立的泄漏模型适用性较好。There are many flow patterns in gas-liquid two-phase flow pipelines,and the relationship between flow parameters which would change once pipeline leakage happens is complicated.Analyzing the transient process of leakage is important to implement leakage detecting and locating of gas-liquid two-phase flow pipeline.A mathematical model of leakage system for gas-liquid pipeline is established and the leakage characteristics including pressure,liquid holdup,gas velocity and liquid velocity in stratified flow condition are analyzed.The control equations are solved by implicit difference method,and the leakage numerical solution of gas-liquid two-phase flow is calculated by C++programming.The solution shows that the pressure,liquid content rate in cross-section,velocities of gas and liquid at downstream of pipeline leakage point all drop as the leakage occurs.And the numerical results are in good agreement with the experimental data,proving that the established leakage model has a well applicability.

关 键 词：气液两相流 分层流 泄漏模型 数值计算 实验研究 

分 类 号：TE973[石油与天然气工程—石油机械设备]